Philippines earthquakes

M5.5 earthquake 26 km ESE of Dolores, Philippines

A magnitude 5.5 earthquake struck 26 km ESE of Dolores, Philippines on Sat, Nov 1, 1975, 2:06 PM GMT+8 (06:06 UTC), 41 km (25 mi) below the surface.

A larger quake followed: M6.1 73 km ENE of San Policarpo, Philippines. This one was a foreshock.

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Map

Where this earthquake was located, with the others nearby. Select one for its page.

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The earthquake

Magnitude
5.5 (ms), moderate
Local time
UTC
1975-11-01 06:06:01 UTC
Depth
41.0 km (25.5 mi), shallow
Epicenter
11.989° N, 125.724° E
Strongest shaking
IV, light shaking
Tsunami flag
No
Status
Reviewed by a seismologist

Shaking

The USGS ShakeMap: shaking estimated from seismic stations and the quake’s size, on the Modified Mercalli intensity scale.

Strongest estimated
IV, light shaking
Peak ground acceleration
3.4% of gravity
Peak ground velocity
0.9 cm/s
Map
Automatic
USGS ShakeMap: estimated shaking intensity around the epicenter
Estimated shaking intensity. Map: USGS ShakeMap.

Did you feel it?

No one has reported feeling this quake to the USGS.

How well it is located

Reviewed by a seismologist.

Stations used
50

Nearest places

Distance and direction from each place to the epicenter, with its forecast.

Nearby

Within 100 km, magnitude 2.5 and up: 19 in the 60 days after this one and 24 in the 30 days before it.

After

  1. 5.1103 km E of San Policarpo, Philippines · 18597 days ago · 33 km deep · 80 km away
  2. 5.162 km NE of Alugan, Philippines · 18596 days ago · 51 km deep · 69 km away
  3. 5.159 km NE of Alugan, Philippines · 18596 days ago · 48 km deep · 73 km away
  4. 4.742 km NE of Alugan, Philippines · 18596 days ago · 33 km deep · 50 km away
  5. 4.887 km NE of Alugan, Philippines · 18596 days ago · 33 km deep · 89 km away
  6. 4.992 km NE of Alugan, Philippines · 18596 days ago · 33 km deep · 93 km away
  7. 5.172 km ENE of San Policarpo, Philippines · 18595 days ago · 33 km deep · 71 km away
  8. 5.182 km NE of Alugan, Philippines · 18593 days ago · 33 km deep · 86 km away
  9. 6.173 km ENE of San Policarpo, Philippines · 18591 days ago · 11 km deep · 73 km away
  10. 4.573 km ENE of San Policarpo, Philippines · 18588 days ago · 33 km deep · 66 km away
  11. 4.889 km NE of Alugan, Philippines · 18578 days ago · 33 km deep · 99 km away
  12. 5.164 km NE of Anito, Philippines · 18578 days ago · 33 km deep · 97 km away
  13. 5.345 km ESE of Dolores, Philippines · 18569 days ago · 64 km deep · 20 km away
  14. 5.176 km ENE of San Policarpo, Philippines · 18568 days ago · 56 km deep · 64 km away
  15. 5.230 km ESE of Dolores, Philippines · 18567 days ago · 33 km deep · 7 km away
  16. 5.671 km ENE of Alugan, Philippines · 18566 days ago · 30 km deep · 73 km away
  17. 5.333 km ESE of Dolores, Philippines · 18556 days ago · 53 km deep · 7 km away
  18. 4.935 km ESE of Dolores, Philippines · 18555 days ago · 33 km deep · 11 km away
  19. 4.826 km E of Dapdap, Philippines · 18538 days ago · 109 km deep · 9 km away

Before

  1. 5.239 km ESE of San Policarpo, Philippines · 18597 days ago · 33 km deep · 18 km away
  2. 4.7Samar, Philippines · 18597 days ago · 33 km deep · 57 km away
  3. 5.054 km NE of Alugan, Philippines · 18597 days ago · 14 km deep · 62 km away
  4. 4.9121 km E of San Policarpo, Philippines · 18597 days ago · 33 km deep · 97 km away
  5. 5.022 km E of San Julian, Philippines · 18597 days ago · 33 km deep · 24 km away
  6. 5.320 km ENE of Sulat, Philippines · 18597 days ago · 50 km deep · 16 km away
  7. 4.7Philippine Islands region · 18597 days ago · 135 km deep · 83 km away
  8. 5.155 km NE of San Policarpo, Philippines · 18597 days ago · 40 km deep · 58 km away
  9. 4.613 km ENE of Mantang, Philippines · 18597 days ago · 64 km deep · 22 km away
  10. 5.173 km ENE of San Policarpo, Philippines · 18597 days ago · 33 km deep · 61 km away
  11. 5.071 km ENE of San Policarpo, Philippines · 18597 days ago · 33 km deep · 60 km away
  12. 4.751 km NE of Alugan, Philippines · 18597 days ago · 111 km deep · 59 km away
  13. 4.999 km E of San Policarpo, Philippines · 18597 days ago · 84 km deep · 77 km away
  14. 4.964 km E of San Policarpo, Philippines · 18597 days ago · 33 km deep · 47 km away
  15. 4.279 km ENE of San Policarpo, Philippines · 18598 days ago · 137 km deep · 76 km away
  16. 4.895 km ENE of San Policarpo, Philippines · 18598 days ago · 23 km deep · 86 km away
  17. 5.071 km ENE of San Policarpo, Philippines · 18598 days ago · 76 km deep · 68 km away
  18. 4.766 km ENE of San Policarpo, Philippines · 18598 days ago · 33 km deep · 63 km away
  19. 5.299 km ENE of San Policarpo, Philippines · 18598 days ago · 33 km deep · 96 km away
  20. 5.579 km NE of Alugan, Philippines · 18598 days ago · 5 km deep · 87 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event usp0000dd1. Read Wed, Sep 30, 2026, 11:22 PM UTC.